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3b403b32 | 1 | #!/bin/bash |
cc02093d HH |
2 | # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*- |
3 | # ex: ts=8 sw=4 sts=4 et filetype=sh | |
4 | # | |
5 | # Copyright 2005-2010 Harald Hoyer <harald@redhat.com> | |
6 | # Copyright 2005-2010 Red Hat, Inc. All rights reserved. | |
7 | # | |
8 | # This program is free software; you can redistribute it and/or modify | |
9 | # it under the terms of the GNU General Public License as published by | |
10 | # the Free Software Foundation; either version 2 of the License, or | |
11 | # (at your option) any later version. | |
12 | # | |
13 | # This program is distributed in the hope that it will be useful, | |
14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | # GNU General Public License for more details. | |
17 | # | |
18 | # You should have received a copy of the GNU General Public License | |
19 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | # | |
074d12c1 | 21 | |
f7bccf37 HH |
22 | usage() |
23 | { | |
dde2db3d | 24 | { |
7d9bb76a HH |
25 | echo "Usage: ${0##*/} [options] [<initramfs file> [<filename> [<filename> [...] ]]]" |
26 | echo "Usage: ${0##*/} [options] -k <kernel version>" | |
dde2db3d | 27 | echo |
7d9bb76a HH |
28 | echo "-h, --help print a help message and exit." |
29 | echo "-s, --size sort the contents of the initramfs by size." | |
30 | echo "-f, --file <filename> print the contents of <filename>." | |
31 | echo "-k, --kver <kernel version> inspect the initramfs of <kernel version>." | |
dde2db3d HH |
32 | echo |
33 | } >&2 | |
f7bccf37 HH |
34 | } |
35 | ||
815b9c16 HH |
36 | |
37 | [[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut | |
38 | ||
3ea5d2e2 | 39 | sorted=0 |
7d9bb76a HH |
40 | declare -A filenames |
41 | ||
42 | unset POSIXLY_CORRECT | |
43 | TEMP=$(getopt \ | |
44 | -o "shf:k:" \ | |
45 | --long kver: \ | |
46 | --long file: \ | |
47 | --long help \ | |
48 | --long size \ | |
49 | -- "$@") | |
50 | ||
51 | if (( $? != 0 )); then | |
52 | usage | |
53 | exit 1 | |
54 | fi | |
55 | ||
56 | eval set -- "$TEMP" | |
57 | ||
58 | while (($# > 0)); do | |
59 | case $1 in | |
60 | -k|--kver) KERNEL_VERSION="$2"; shift;; | |
61 | -f|--file) filenames[${2#/}]=1; shift;; | |
62 | -s|--size) sorted=1;; | |
63 | -h|--help) usage; exit 0;; | |
64 | --) shift;break;; | |
65 | *) usage; exit 1;; | |
3ea5d2e2 | 66 | esac |
7d9bb76a | 67 | shift |
3ea5d2e2 | 68 | done |
3ea5d2e2 | 69 | |
7d9bb76a | 70 | [[ $KERNEL_VERSION ]] || KERNEL_VERSION="$(uname -r)" |
dde2db3d | 71 | |
7d9bb76a | 72 | if [[ $1 ]]; then |
dde2db3d HH |
73 | image="$1" |
74 | if ! [[ -f "$image" ]]; then | |
75 | { | |
76 | echo "$image does not exist" | |
77 | echo | |
78 | } >&2 | |
79 | usage | |
80 | exit 1 | |
81 | fi | |
dde2db3d | 82 | else |
727e68d0 HH |
83 | [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id |
84 | ||
7d9bb76a HH |
85 | if [[ -d /boot/loader/entries || -L /boot/loader/entries ]] \ |
86 | && [[ $MACHINE_ID ]] \ | |
87 | && [[ -d /boot/${MACHINE_ID} || -L /boot/${MACHINE_ID} ]] ; then | |
727e68d0 HH |
88 | image="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd" |
89 | else | |
d928724c | 90 | image="/boot/initramfs-${KERNEL_VERSION}.img" |
727e68d0 | 91 | fi |
dde2db3d HH |
92 | fi |
93 | ||
7d9bb76a HH |
94 | shift |
95 | while (($# > 0)); do | |
96 | filenames[${1#/}]=1; | |
97 | shift | |
98 | done | |
727e68d0 | 99 | |
dde2db3d HH |
100 | if ! [[ -f "$image" ]]; then |
101 | { | |
102 | echo "No <initramfs file> specified and the default image '$image' cannot be accessed!" | |
103 | echo | |
104 | } >&2 | |
105 | usage | |
106 | exit 1 | |
107 | fi | |
074d12c1 | 108 | |
815b9c16 HH |
109 | extract_files() |
110 | { | |
111 | (( ${#filenames[@]} == 1 )) && nofileinfo=1 | |
112 | for f in ${!filenames[@]}; do | |
113 | [[ $nofileinfo ]] || echo "initramfs:/$f" | |
114 | [[ $nofileinfo ]] || echo "========================================================================" | |
115 | $CAT $image | cpio --extract --verbose --quiet --to-stdout $f 2>/dev/null | |
116 | ((ret+=$?)) | |
117 | [[ $nofileinfo ]] || echo "========================================================================" | |
118 | [[ $nofileinfo ]] || echo | |
119 | done | |
120 | } | |
121 | ||
122 | list_files() | |
123 | { | |
124 | echo "========================================================================" | |
125 | if [ "$sorted" -eq 1 ]; then | |
126 | $CAT "$image" | cpio --extract --verbose --quiet --list | sort -n -k5 | |
127 | else | |
128 | $CAT "$image" | cpio --extract --verbose --quiet --list | sort -k9 | |
129 | fi | |
130 | ((ret+=$?)) | |
131 | echo "========================================================================" | |
132 | } | |
133 | ||
134 | ||
135 | if (( ${#filenames[@]} <= 0 )); then | |
136 | echo "Image: $image: $(du -h $image | while read a b; do echo $a;done)" | |
137 | echo "========================================================================" | |
138 | fi | |
139 | ||
884e1cda | 140 | read -N 6 bin < "$image" |
815b9c16 HH |
141 | case $bin in |
142 | $'\x71\xc7'*|070701) | |
143 | CAT="cat --" | |
144 | is_early=$(cpio --extract --verbose --quiet --to-stdout -- 'early_cpio' < "$image" 2>/dev/null) | |
145 | if [[ "$is_early" ]]; then | |
146 | if (( ${#filenames[@]} > 0 )); then | |
147 | extract_files | |
148 | else | |
149 | echo "Early CPIO image" | |
150 | list_files | |
151 | fi | |
152 | SKIP="$dracutbasedir/skipcpio" | |
153 | if ! [[ -x $SKIP ]]; then | |
154 | echo | |
155 | echo "'$SKIP' not found, cannot display remaining contents!" >&2 | |
156 | echo | |
157 | exit 0 | |
158 | fi | |
159 | fi | |
160 | ;; | |
161 | esac | |
162 | ||
815b9c16 | 163 | |
70311156 HH |
164 | CAT=$({ |
165 | if [[ $SKIP ]]; then | |
166 | $SKIP "$image" | |
167 | else | |
168 | cat "$image" | |
169 | fi } | { | |
170 | read -N 6 bin | |
171 | case $bin in | |
172 | $'\x1f\x8b'*) | |
173 | echo "zcat --" | |
174 | ;; | |
175 | BZh*) | |
176 | echo "bzcat --" | |
177 | ;; | |
178 | $'\x71\xc7'*|070701) | |
179 | echo "cat --" | |
180 | ;; | |
07c4a2fc | 181 | $'\x02\x21'*) |
70311156 HH |
182 | echo "lz4 -d -c" |
183 | ;; | |
491dbfe0 TG |
184 | $'\x89'LZO$'\0'*) |
185 | echo "lzop -d -c" | |
186 | ;; | |
70311156 HH |
187 | *) |
188 | if echo "test"|xz|xzcat --single-stream >/dev/null 2>&1; then | |
189 | echo "xzcat --single-stream --" | |
190 | else | |
191 | echo "xzcat --" | |
192 | fi | |
193 | ;; | |
194 | esac | |
195 | }) | |
66fe35eb | 196 | |
815b9c16 HH |
197 | skipcpio() |
198 | { | |
199 | $SKIP "$@" | $ORIG_CAT | |
200 | } | |
201 | ||
202 | if [[ $SKIP ]]; then | |
203 | ORIG_CAT="$CAT" | |
204 | CAT=skipcpio | |
205 | fi | |
206 | ||
884e1cda HH |
207 | ret=0 |
208 | ||
4460416a | 209 | if (( ${#filenames[@]} > 0 )); then |
815b9c16 | 210 | extract_files |
3ea5d2e2 | 211 | else |
815b9c16 | 212 | version=$($CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- 'lib/dracut/dracut-*' 'usr/lib/dracut/dracut-*' 2>/dev/null) |
4460416a HH |
213 | ((ret+=$?)) |
214 | echo "$version with dracut modules:" | |
a0b85db1 | 215 | $CAT "$image" | cpio --extract --verbose --quiet --to-stdout -- '*lib/dracut/modules.txt' 2>/dev/null |
4460416a | 216 | ((ret+=$?)) |
815b9c16 | 217 | list_files |
3ea5d2e2 | 218 | fi |
4460416a | 219 | |
884e1cda | 220 | exit $ret |